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Question 1 of 11

1. Question

Which of the following is/are can be considered as ‘common property resources’?

Fishery

Fishes

Internet

Grazing ground

Electromagnetic Spectrum

The air

Choose the correct answer using the codes below:

a) 1,2,4 and 6 Only

b) 1, 4 and 5 Only

c) 1,2,3,4 and 6 Only

d) All

Correct

Solution: d)

All are common pool resources if we consider the following definition as standard:

“Common-pool Resources (CPRs) are natural or human-made resources where one person’s use subtracts from another’s use and where it is often necessary, but difficult and costly, to exclude other users outside the group from using the resource.. The majority of the CPR research to date has been in the areas of fisheries, forests, grazing systems, wildlife, water resources, irrigation systems, agriculture, land tenure and use, social organization, theory (social dilemmas, game theory, experimental economics, etc.), and global commons (climate change, air pollution, transboundary disputes, etc.), but CPR’s can also include the broadcast spectrum.

All are common pool resources if we consider the following definition as standard:

“Common-pool Resources (CPRs) are natural or human-made resources where one person’s use subtracts from another’s use and where it is often necessary, but difficult and costly, to exclude other users outside the group from using the resource.. The majority of the CPR research to date has been in the areas of fisheries, forests, grazing systems, wildlife, water resources, irrigation systems, agriculture, land tenure and use, social organization, theory (social dilemmas, game theory, experimental economics, etc.), and global commons (climate change, air pollution, transboundary disputes, etc.), but CPR’s can also include the broadcast spectrum.

2. Question

Forest land is defined as land under natural or planted stands of trees of at least 5 meters in situ, whether productive or not, and excludes tree stands in agricultural production systems (for example, in fruit plantations and agroforestry systems) and trees in urban parks and gardens.

As per the above definition, which of the following countries have more than fifty percent of their total land area as Forest land?

7. Question

With reference to International Union for Conservation of Nature (IUCN), consider the following statements:

It is the main body of the United Nations which deals with endangered species of plants and animals around the world

CITES(the Convention on International Trade in Endangered Species of Wild Fauna and Flora, also known as the Washington Convention) was adopted at IUCN

Which of the above statements is/are correct?

a) 1 Only

b) 2 Only

c) Both

d) None

Correct

Solution: b)

IUCN has observer and consultative status at the United Nations, and plays a role in the implementation of several international conventions on nature conservation and biodiversity. However, it is not a body of the United Nations.

IUCN has observer and consultative status at the United Nations, and plays a role in the implementation of several international conventions on nature conservation and biodiversity. However, it is not a body of the United Nations.

9. Question

Apart from wheat, other crops such as Maize, soyabean and groundnut are mainly grown during the rabi season

Rabi crops are generally grown from October and March

Which of the above statements is/are correct?

a) 1 Only

b) 2 Only

c) Both

d) None

Correct

Solution: b)

NCERT Class VIII – Science – Chapters 1,

Incorrect

Solution: b)

NCERT Class VIII – Science – Chapters 1,

Question 10 of 11

10. Question

Consider the following statements:

Manures are relatively less rich in plant nutrients compared to fertilizers

Fertilizers provide relatively less humus to soil compared to manures

Which of the above statements is/are correct?

a) 1 Only

b) 2 Only

c) Both

d) None

Correct

Solution: a)

NCERT Class VIII – Science – Chapters 1,

Fertilizers do not provide ANY humus to soil.

Incorrect

Solution: a)

NCERT Class VIII – Science – Chapters 1,

Fertilizers do not provide ANY humus to soil.

Question 11 of 11

11. Question

Which of the following gases directly or indirectly contributes towards global warming?

Carbon Monoxide

Methane

Water Vapour

Ozone

Chlorofluorocarbons

Choose the correct answer using the codes below:

a) 1,2,4 and 5 Only

b) 2,3,4 and 5 Only

c) 2 and 5 Only

d) All

Correct

Solution: d)

In order, the most abundant greenhouse gases in Earth’s atmosphere are:

Water vapor(H 2O)

Carbon dioxide(CO2)

Methane(CH 4)

Nitrous oxide(N 2O)

Ozone(O 3)

Chlorofluorocarbons(CFCs)

Some gases have indirect radiative effects (whether or not they are a greenhouse gas themselves). This happens in two main ways. One way is that when they break down in the atmosphere they produce another greenhouse gas. For example, methane and carbon monoxide (CO) are oxidized to give carbon dioxide (and methane oxidation also produces water vapor; that will be considered below). Oxidation of CO to CO2 directly produces an unambiguous increase in radiative forcing although the reason is subtle. (Wikipedia)

NCERT Class VIII – Science – Chapters 18,

Incorrect

Solution: d)

In order, the most abundant greenhouse gases in Earth’s atmosphere are:

Water vapor(H 2O)

Carbon dioxide(CO2)

Methane(CH 4)

Nitrous oxide(N 2O)

Ozone(O 3)

Chlorofluorocarbons(CFCs)

Some gases have indirect radiative effects (whether or not they are a greenhouse gas themselves). This happens in two main ways. One way is that when they break down in the atmosphere they produce another greenhouse gas. For example, methane and carbon monoxide (CO) are oxidized to give carbon dioxide (and methane oxidation also produces water vapor; that will be considered below). Oxidation of CO to CO2 directly produces an unambiguous increase in radiative forcing although the reason is subtle. (Wikipedia)